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Actress Christina Hendricks is opening up on the new "Mad Men" season.

Fan have been clamoring to take a trip back to 1960's New York and wander the halls of Sterling Cooper Draper Pryce on AMC's "Mad Men," but their wait will continue until March 2012, something star Christina Hendricks says will pay off in big ways.

"I know it's been a little bit of a wait, but it will be worth it," the actress, who plays office bombshell Joan Holloway on the series, told Billy Bush and Kit Hoover on Tuesday's Access Hollywood Live. "We're already shooting our tenth episode."

Viewers last saw Joan in the middle of a pregnancy pickle, not knowing if the father of her baby was husband Greg Harris (played by Sam Page) or the child of her boss and former flame, Roger Sterling (John Slattery). But Christina stayed tightlipped on who her character's baby daddy might be.

"It wouldn't be fun if I told you, you gotta wait!" she said with a smile. "There's some really great storytelling. You'll have to wait and see."

Some of the stories in the upcoming Season 5 will be directed by co-star Jon Hamm.

"He's natural," she said of Jon's skills behind the camera as a director. "John Slattery has also directed a couple episodes. They know the story so well and they know us so well and their notes are fun. It's very, very easy to work with them. They're really great at it."

In addition to currently filming her Emmy-winning series, Christina is also busy promoting another new venture – into the world of video games!

The star is featured in "Need For Speed: The Run," where she plays a character (featuring her voice and likeness) in the midst of a race across the country from San Francisco to New York City.

"My husband is a huge video game player," she said of "Body of Proof's" Geoffrey Arend, her husband of two years. "I had to enter his world! It's like, 'I'm going to be in the video game, you won't be able to get away from me!'"